Automatic releasing wrench



Sept. 16, 1930. w. FISHER ET AL 1,775,995

AUTOMATIC RELEASING WRENCH Filed May 23, 1929 N v E. N TORS: 15.9-$1170.7 75631 ar m1 BY: d 43% T OH YEYS.

Patented Sept. 16, 1930 WILLIAM FISHER AN D CHARLIE SMITH, OF BRADFORD,ENGLAND AUTOMATIC RELEASING WRENCH Application filed May 23, 1929,Serial No. 365,257, and in Great Britain June 28, 1928.

This invention relates to the construction of a tool for the weightingor tightening of rollers, and refers more particularly to the rollersconnected with spinning and drawing machinery, but may be used for otherpurposes such as winding clocks, gramophones, or adjusting shockabsorbers.

At the present time the usual method of adjusting the roller of spinningframes is by means of wing nuts, which apply pressure through a springon to the arbor of the rollers. N o indication of the amount of pressure is given, and an uneven contact between the rollers often results,which is detrimental to the fibres as they are being spun, moreparticularly as fluted bottom rollers are used. There is also, by usingour apparatus, less wear on the friction driven top roller which mayconsiderably aflect the power taken to drivethe spinning frame.

It is our object to replace the wing nuts by ordinary nuts, andconstruct a tool for tightening or winding purposes, which will supplythe desired amount of pressure to each and every roller, independent ofany variation that may occur in the roller springs, and that when suchpressure has been reached the handle of the tool will disengage from itsactuating position and apply no further pressure. We may however adaptthe tool to operate the usual wing nuts.

In describing our invention in detail reference is made to theaccompanying sheetof drawings, similar letters indicating similar parts,in which,

Fig. 1 represents a side elevation of the hereinafter described tool(partly in section).

Fig. 2 represents a plan looking from the top (also partly in section).

Fig. 3 represents a plan of a nut engaging member referred to.

Figs. 4 and 5 are respectively a partly sectional side view and a.transverse sectional view of a box wrench constituting an element of theimproved device;

Fig. 6 is a side View of the wrench operating handle illustrating oneform of claw member;

Fig. 7 is a view similar to Fig. 6 but showing a modified form of theclaw member; and

Figs. 8 and 9 are views similar to Figs. l and 5 respectively, butshowing a box wrench adapted for use with the claw member shown in Fig.7.

To carry our invention into effect we mount on a suitable socket memberor the like A a loose bush B, having a pair of per forated lugs or earsB extending radially therefrom, said lugs being spaced apart to receivebetween them a claw like member C of a spring actuated handle C. Withinthe barrel C we insert a spring S terminating at one end in or hearingon a nose l which is in contact with a lug L projecting from the loosebush B, and at the other end are means for adjusting the tension of thesaid spring to apply whatever pressure is desired,

comprising a screw threaded stud D operating within the barrel C andwhich is provided with an indent or like D to receive a suitable toolpassed through an aperture C in the barrel closure member C.

The claw like member C passes through the gap between the lugs B on thebush B to which it is pivotally attacned at B and ingages with a slot Ain the socket member In operation, the tool having been set to thedesired pressure is placed on the desired nut and the handle turned inthe direction of the arrow in Fig. 2. WVhen the desired pressure, whichhas been applied on the roller spring by the turning of the nut, becomesequal to that pre-arranged by the adjustment of the spring S in thehandle C of the tool, the nose N of the spring becomes compressed or ispushed inwards by the lug L on the bush and the claw like member C isreleased from the box key barrel A Further turning of the handle willproduce no winding effect due to the disengagement of the claw.

Figs. 1, 2, 3, 4, 5, and 6 represent one form and details of partsreferred to. In Figs. 7, 8, and 9 details are shown of an alternativeform where the box key barrel A and its slot A vary slightly to receivea claw like member C", Fig. 7 carried by the handle C which yariesslightly from that shown in Figs. 1 and 6.

i It Will be noted that while thehandle 'o is pivotally attached to theloose bush B its movement is limited by the lug L which is of such aconstruction and in such relationship to thehandl'e or its nose aswillperniit of the claw like. member being free'of the box key at thedesired time. w v V In some forms the spring mechanism might ,Qwouldensue; i

The socket member may be adapted to fit nuts or other turnablememberswhichmay vary in shape. H

l 1. An automatic.

names to this specification.

WILLIAM-menus." 1, I

' I CHARLIE SMITH.

be carried' by the lug-Lbut this is not ]preferred as limitation ofspringadjustment We claim:.

adaptedtoengage said nut-engaging member "thereby to rotate the *same,and a ljustzable It is equal to the springgpressure.

spring-pressed means between said'k handle 7' r I v, i and bushing andadapted to :j cause the release f d of said'claw-fromsaid nut-engagingmember member 1 i when the turningpressure on said;

i2. An iautomati releasing wrench,{ com-' prising arotatablerut-engaginginemberifaV bushing encircling said member andmount: red for rotation thereon a tubular handle pro- 6 yided with. anoffset extension piVota-lly secured to said'bushing; and having at its'free releasing wrench; comprising a rotatable nutengaging: member, a ubushing encircling said member and mounted j for rotation thereon, a'handle pivot-ally s'ecured to said bushing and claw end a clawadapted-to engage said nut-engaging member thereby to rotate'the same, amember longitudinally slidable in said-handle 7 and normally projectingtherefrom 'ina direction approximately parallel with said claw, atension'spring disposed in'said handle I and adapted normally tomaintain said slid- 1 able member in, projected, position, a stop member{carried by said bushing in the path of projection ofsaidin'embenandmeansfor adjusting the tension of saidspring, 7 v

3. An automatic releasing 'wrenchj fcomprising a rotatablenut-engagingmemberfa "I 7 bushing mounted for rotation on said member '1 and havinga pair of radially extending spaced apart lugs, a tubular handleprovided i with an oifset extension pi'votally secured between said lugsand haying at its'free; end

alclaw adapted'to engage saidnut-engaging member, thereby'to rotate thesame a mem- 7 her longitudinally slidable in saidhandlexandapproximately parallel with said claw, a

' ,tensionspring disposed in said-handlej and normally; proj ectingtherefrom in a direction I adapted-normally to maintain} said slidabl'ememberin projected position; a lug extend ing radiallyfrom said bushingat right angles d to said pair of. lugs, a stop member carried by saidlug inthe path of projectionpfsaid

